O'Day, E. F. (1971). Programmed Instruction techniques and trends. Appleton Centrury Craft.
Chicago Edition CitationO'Day, Edward F. Programmed Instruction Techniques and Trends. Appleton Centrury Craft, 1971.
MLA Edition CitationO'Day, Edward F. Programmed Instruction Techniques and Trends. Appleton Centrury Craft, 1971.
Warning: These citations may not always be 100% accurate.